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authorjack <[email protected]>2024-06-14 13:13:15 -0600
committerjack <[email protected]>2024-06-14 13:13:15 -0600
commitd343a3b18dbaca9297d4f7b2280c4a16f0a5c8aa (patch)
tree96df922dae2a5073d9a50ea70c7aae6aa37e3ebe /house_robber.cpp
downloadleetcode-d343a3b18dbaca9297d4f7b2280c4a16f0a5c8aa.tar.gz
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+#include "leetcode.h"
+
+class Solution {
+public:
+ int rob(vector<int> &nums) {
+ // space-optimized dynamic programming approach
+ int prev = 0, prev2 = 0, curr = 0;
+ for (auto i : nums) {
+ curr = max(prev, i + prev2);
+ prev2 = prev;
+ prev = curr;
+ }
+ return curr;
+ }
+};
+
+int main() {
+ Solution obj;
+ vector<int> nums = {1, 2, 3, 1};
+ cout << obj.rob(nums); // expect 4
+}